import java.awt.Color;


public class firstlab extends javax.swing.JFrame {
	
	public firstlab(String title){
		super(title);
		this.setSize(600, 450);
		this.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
		this.add(new RectanglePanel());
		this.setVisible(true);
	}
	
	public static void main (String[] args){
		firstlab app = new firstlab ("My JFrame");
	}

}
